# Solution: Find the force required to start the block moving up the plane

A 250 lb. block is initially at rest on a flat surface that is inclined at 30°. If the coefficient of kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force required to start the block moving up the plane.

#### Problem Statement: EE Board October 1997

A 250 lb. block is initially at rest on a flat surface that is inclined at 30°. If the coefficient of kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force required to start the block moving up the plane.

• A. 190 lb.
• B. 212 lb.
• C. 125 lb.
• D. 75 lb.

The force required to start the block moving up the plane is 212 lb..

Solution:

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