SOLUTION: Hi, please help me with this problem: Workers are trying to hold a 2600 lb monument stone stationary on a wooden ramp inclined at 20 degrees. The ramp has been coated in yak fat

Question 401127: Hi, please help me with this problem:
Workers are trying to hold a 2600 lb monument stone stationary on a wooden ramp inclined at 20 degrees. The ramp has been coated in yak fat so it is a frictionless surface.
With what force must the workers pull to keep the stone stationary? Round the nearest pound.
Thank you!
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Treat the 2600 lb stone as a vector with horizontal and vertical components (assigning a coordinate system with x parallel to the ramp). The normal force is equal to , and the force that causes acceleration on the ramp is , roughly 889 pounds.
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