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trasher [3.6K]
3 years ago
12

A shopper pushes a grocery cart for a distance of 18m at a constant speed on level ground, against a 37.5N frictional force. he

pushes in a direction 27.5° below the horizontal.
what is the work done on the cart by gravitational force, in joules.
Physics
1 answer:
goldfiish [28.3K]3 years ago
5 0

d = distance to which the grocery cart is pushed = 18 m

f = frictional force = 37.5 N

θ = angle of force below the horizontal = 27.5 deg

W = gravitational force in downward direction

Θ = angle between gravitational force in down direction and displacement in horizontal direction = 90

U = work done on the cart by gravitational force

work done on the cart by gravitational force is given as

U = W d CosΘ

inserting the values

U = W (18) Cos90

U = 0 J


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