Physics Help

Question

Wayne exerts a force of 90.2 N to pull a 409 N sled along a snowy path using a rope that makes a 34◦ angle with the ground. The sled moves 15.5 m in 4.8 s. What is Wayne’s power? Answer in units of W

Answer 1

Step 1:

The force exerted to pull a sled is .

The rope makes an angle with ground is .

The sled moves distance is in .

The component of force that is in the direction of the sleds movement is .

.

The work done is .

Substitute , and .

.

Step 2:

Power .

Substitute and .

.

Wayne's power is .

Solution:

Wayne's power is .