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5 votes
5 votes
In the image below, a worker is pushing a crate with a mass of 10 kg up a

ramp at a constant rate. Ignoring friction, how much force must the worker
apply so that the crate continues to move at the same speed? (Recall that g =
9.8 m/s²)
A. 25.6 N
B. 67.5 N
C. 16.2 N
D. 49.0 N

In the image below, a worker is pushing a crate with a mass of 10 kg up a ramp at-example-1
User Andre Gelinas
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1 Answer

15 votes
15 votes

Answer:

D. 49N

Step-by-step explanation:

Because there is no acceleration the sum of the forces in the x-direction is zero. Your weight force is mass x gravity which is 98N. The x-component of which is sin(30). 98sin30 = 49N in the negative x-direction. -49N + The force applied by the worker must equal zero. So, the force applied by the worker must be 49N.

User Sameer Technomark
by
2.4k points