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Is it true or false that some machines don't multiply the force that is applied to them?
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True or false The fulcrum is closer to the force when a force multiplier lever is used?
False. A lever to multiply the force exerted has its fulcrum closer to the object than to the force is applied. This will increase the force but decrease the distance the object moves compared to the force end.
Most force must be applied when pushing something across a rough surface?
false
One way to increase the force used to pull a wagon is to decrease the mass in the wagon true or false?
False. Since Force=mass*acceleration, decreasing mass will increase acceleration for the same applied force.
True or false work is done only when an object moves in the direction of the applied force?
true!
A force at any angle to the direction of motion can perform work?
False a force at any angle to the direction of motion can not perform work. Power is the rate at which a force is applied.
Are simple machines unable to multiply the applied effort force?
no
True or false The fulcrum is closer to the force when a force multiplier lever is used?
False. A lever to multiply the force exerted has its fulcrum closer to the object than to the force is applied. This will increase the force but decrease the distance the object moves compared to the force end.
The law of applied for states that bodies change in mass and proportional to the amount of force applied to it true or false?
The law of applied for states that bodies change in mass and proportional to the amount of force applied to it is false.
Why do machines the less force to do the same amount of work?
Because machines allow force to be applied over a greater distance.
Who is greater the applied force or the force exerted by the machine?
That depends on whether the machine is designed to multiply force or distance. A machine designed to multiply distance will exert less force than was applied, and a machine designed to multiply force will exert the greater force over a shorter distance than force was applied to it. As for work, output work is always less than input work because some energy is lost in overcoming friction.
What is another word for fulcrum?
The fulcrum is the support about which a lever pivots.The fulcrum is the pivot point in a lever (or other simple machines ) to either multiply the mechanical force (effort) that can be applied to another object or resistance force (load), or multiply the distance and speed at which the opposite end of the rigid object travels. =]
True or false the law of applied forces states that a body's change in mass is proportional to the amount of force applied to it?
The statement is not only false, but absurd as well.
Is a third class lever a force mulitplier or distance mulitplier?
Levers are used to multiply the mechanical force applied to a load.
Most force must be applied when pushing something across a rough surface?
false
One way to increase the force used to pull a wagon is to decrease the mass in the wagon true or false?
False. Since Force=mass*acceleration, decreasing mass will increase acceleration for the same applied force.
True or false work is done only when an object moves in the direction of the applied force?
true!
How much work is done with a force of 300 N for 750 m if the force of friction is 200 N?
The idea here is to multiply the force applied - the 300 N - by the distance over which it is applied. The force of friction does not affect the calculation. Note: Since the force of friction is less than the force applied, and if there are no other forces, the object will accelerate.
