Force and Press...

A force of $$500 N$$ acts on a square piece of plywood, each of whose sides is $$5 m$$ long. Calculate the pressure acting on the piece of plywood.

When a force acts on a large area, the pressure it exerts is more.

A force of $$400 N$$ exerts a pressure of $$20 N/cm^{2}$$. What is the area on which the force acts?

A boy stands on the ground. The area below his feet is $$70 cm^{2}$$. The pressure he exerts on the ground is $$7 N/cm^{2}$$. Calculate the total force acting on the ground.

In the frozen northern regions of Canada, the Eskimos wear large snowshoes as that help them to walk on freshly fallen snow.

In a game of tug of war, three girls of team $$A$$ pull the rope with forces of $$100 N$$, $$120 N$$ and $$170 N$$. In team $$B$$, the three members pull the rope with forces of $$130 N$$, $$150 N$$ and $$155 N$$. Who will win the tug of war? What is the resultant force?

A force exerts a pressure of $$45 N/m^{2}$$ when it acts on an area of $$10 m^{2}$$. Calculate the total force

Which of the pictures shows that a force changes the shape of an object?

Following diagram shows a moving tennis ball is hit by a player. What effect of the force is shown in the below picture ?

You want to lift a heavy box. The force of gravity pulls it downwards with a force of $$500N$$. Your father applies an upward force of $$220 N$$ from below. How much force will you have to apply to lift it upwards?