You can move a trolley with a magnetic force (e.g. use magnets to draw the trolley away from it's original position - assuming it is made of a magnetic material), a gravitional force (e.g. rolling the trolley down a ramp) or with an applied force (e.g. pushing the trolley).
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Work
You have to move it (by your hand) and it takes some force to do that...
The force of gravity makes the ball move downward. To move it upward, you need to supply enough force to compensate for this (to stop the downward motion) plus a little extra (to cause the ball to move upward).
Use the definition of work: work = force x distance and solve for distance. Since you are using SI units, the distance will be in meters. Note that this is a simplified formula, which assumes (1) that the force is constant, and (2) that the force is applied in the same direction as the movement.
Mechanical advantage: you can use some method (eg, lever or pulley wheels) to move an object which otherwise would be too heavy, or jammed. The trade off is that you can't get away with using less work - the reduced force you need to apply is compensated by the fact you have to move your force throgh a proportionately larger distance.
The trolley took the people sight-seeing.
If you've got more tools than what's comfortable to lug around in a tool box, then a storage trolley on wheels would let you move your tools around more easily.
a car uses oil. it burns the oil and ,the motor pistons move when the gas is released from the burned oil to move a more mechanical thing there , which ends up as mechanical force. it uses liquid to make MECHANICAL FORCE. //petrolium
It depends on the type of trolley and also on the use the dis-assembled parts are to be put to.
The Force...
yes and no yes because you can use force or air to move thing no because there is energy that help you move stuff
The formula for force is Force= Mass x Acceleration. Therefore, you have to use a greater force to move the refrigerator because it has a greater mass than the book.
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If you are pushing a car and use less force it will be harder to make the car move.
My mother pushes the trolley whenever we visit the supermarket. or I always ask my mum if I can sit in the trolley when we are in the supermarket. or We are not allowed to take the trolleys on the escalators.