Question

Wayne exerts a force of 63 N to pull a 308 N sled along a snowy path using a rope that makes a 33° angle with the ground. The sled moves 11.3 m in 3.1 s. What is Wayne’s power? Answer in units of W.

Answer 1

Answer:

P = 192.6 Watt

Explanation:

given,

Force of Pull, F = 63 N

Weight of the sled, W = 308 N

Angle made with ground, θ = 33°

Movement of sled,s= 11.3 m

time, t = 3.1 s

Power of Wayne = ?

Work done = F .s cos θ

W = 63 x 11.3 x cos 33°

W = 597 J

We know.

$Power = \dfrac{Work\ done}{time}$

$P= \dfrac{597}{3.1}$

  P = 192.6 Watt

The Wayne's Power is equal to P = 192.6 Watt