Question

john wants to pull a cart applying a force parallel to the ground.his friend ramu suggest that it would be easier to pull the cart by applying a force at an angle of 30° to the ground who is currect and why??​

Answer 1

Answer:

as we know work done = force*displacement*cos¢

In first case :- the angle bt force and displacement is zero

so work done = F*d

in 2 case the angle bt f and d is 30°

so work done = f*d √3/2

which is less than f*d

thats why pulling at 30° is easier than pulling parallel