A shopper in a supermarket pushes a cart with a force of 31 N directed at an angle of 25° downward from the ho?
A shopper in a supermarket pushes a cart with a force of 31 N directed at an angle of 25° downward from the horizontal. Find the work done by the shopper as she moves down a 44 m length of aisle.
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The only force doing work is the horizontal component of the 31N force. This is equal to:
31N x cos25 = 28N
Work (W) is equal to force times distance (d = 44M)
W = F x d
W = 28N x 44m = 1.2 x 10^3 J
Hope this helps.