Block 1 and Block 2 Have the Same Mass,m,and Are

question 45

Multiple Choice

Block 1 and block 2 have the same mass,m,and are released from the top of two inclined planes of the same height making 30° and 60° angles with the horizontal direction,respectively.If the coefficient of friction is the same in both cases,which of the blocks is going faster when it reaches the bottom of its respective incline?

• A) We must know the actual masses of the blocks to answer.
• B) Both blocks have the same speed at the bottom.
• C) Block 1 is faster.
• D) Block 2 is faster.
• E) There is not enough information to answer the question because we do not know the value of the coefficient of kinetic friction.