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When there are several people acting on an object and it starts to roll what do you know about the forces acting on the rock?
Wiki User
∙ 8y ago
You know that the combined force is enough to overcome the force of friction.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe answer will depend on how the object is related to the rock.
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What is forces that cause a change in motion?
ANY force can cause a change in motion, as long as the sum of all the forces acting on an object is non-zero. For example, if two people pull on an object in opposite directions, and with forces that have the same magnitude, then the sum of the forces would be zero, and the object won't accelerate.
What happens when forces are going in opposite directions?
Assuming the two forces are acting ON THE SAME OBJECT, you can subtract the two forces, to get the net force. Important: This does not apply to Newton's Third Law, since the forces act on DIFFERENT OBJECTS. I mention this because people tend to get this confused.
What 2 things should you describe about a force that acts on an object?
Most objects have more than one force acting on them. Sometimes several forces act all in the same direction, such as when a ball is rolled downhill. Other times forces act in different directions. This is like a tug-of-war with a rope. Some people pull the rope one way, and others pull the opposite way. If the people on both sides are equally strong, then the rope doesn’t move. This is an example of balanced forces. But if the people on one side are stronger than thepeople on the other side, more force will come from the stronger group and they will pull the rope in their direction. This is an example of unbalanced forces. To find the overall effect of forces acting on an object, you add the forces together. This gives you the net force.
Is a push or pull on an object?
"Force" is the push or pull acting on an object... not that hard people. :D
When finding net force why must you the direction of the forces acting on an object?
As an example, if two people push in opposite directions, they won't get anything done; if they push in the same direction, the net force increases.
When several people are pushing on a large rock and it starts to roll what do you know about the forces acting on the rock?
When several people push on a large rock and it starts to roll, it means that the force applied by the people was greater than the force of friction holding the rock in place. This causes the rock to overcome static friction and start moving due to the net force acting on it. Once in motion, the force of kinetic friction will act to oppose the motion of the rock.
How do unbalanced forces affect an object's speed?
Newton's Laws of Motion tell us that the velocity of a body remains constant unless subject to a force. If there are more than one force acting, it will be the net force that causes any change in velocity. So in the case where the forces are balanced, nothing will change, but note you must be sure the forces are balanced in direction as well as magnitude. In fact what you have to do is evaluate the net force as a vector quantity. If the forces are in fact unbalanced this means there is a net force in a certain direction, and this will act on the body, in that direction. (Force = mass x acceleration)
What really are balanced forces?
A balanced force is when two equal forces are applied on an object pushing both ways. Also they are equal forces acting on an object in opposite directions.When something isn't moving the forces are balanced, eg. Gravity pulls a table down but that table is pushed up by the floor or the ground it stands on so doesn't move.An UNbalanced force is needed for something to change movement or change direction, eg. a seesaw moving up and down because the forces aren't equal.A balanced force is a force equally opposed by another force in the opposite direction, meaning that they cancel out each other so the object does not move, unlike an unbalanced force, where the object will move because one force over powers the other.When something isn't moving the forces are balanced, eg. Gravity pulls a table down but that table is pushed up by the floor or the ground it stands on so doesn't move.An UNbalanced force is needed for something to change movement or change direction, eg. a seesaw moving up and down because the forces aren't equal.Unlike balanced forces, we say unbalanced forces when two forces acting on an object are not equal in size.When a number of forces act on a body simultaneously and the resultant of these forces is zero, then the forces are said to be balanced.Moment=distance from pivot to source of force x forceNm= m x NMoments on either side of an object must be equal for the object to balance.e.g on a see-saw someone who weighs 1000N sits 1m from the pivot, and someone who weighs 2000N sits 0.5m from the pivot on the other side of the see-saw will balance as in this situation, on both sides of the see- saw Nm=1000A balanced force is where forces on opposite sides of the object are the same net force (for example, 15 N and -15 N) which makes for the object being at rest. Balanced net force on an object makes for the object ALWAYS being at rest. Also it has to be even on both sides to be a balanced force -Keyaira PennieBalanced forces do not cause a change in motion. They are equal in size and opposite in direction.
When people are pushing on a large rock and its starts to rollwhat do you know about the forces acting on the rock?
that they are greater than the forces keeping the rock from moving...
Use balanced forces in a sentence?
When two people are pushing a box from opposite sides with equal force, the box remains stationary due to the balanced forces acting on it.
How many different types of forces are there?
If you are referring to the fundamental forces of nature; there are four, being: -Electromagnetism; this is the force responsible for all things involving magnets and electricity. -Gravity; this is the force that causes objects with mass (more correctly energy) to attract each other. It causes things to fall down and is probably the force most people are most familiar with. The last two forces are not generally known because their influences usually are only felt in the world of small things such as atoms, and their influences are only rarely seen in the every day world. -Weak nuclear force; this force governs certain interactions of sub-atomic particles and in particular it is responsible for radioactive decay. -Strong nuclear force; this force works on only a few types of particles; particles which have a color charge. It is, for example, responsible for binding the protons and neutrons together inside an atomic nucleus. Without this force the nucleus would be pushed apart because the protons repel each other electromagnetically.
Will balanced forces on ab object change its motion?
No, they do not. Unblanced forces do.
