Answer:
Explanation:
μ = 0.05 is hardly a "rough surface", More like very slick ice. But OK
Forces acting parallel to the ramp with UP RAMP being positive direction.
F = ma
Tension minus weight minus friction will equal mass acceleration
T - mgsinθ - μmgcosθ = ma
T = m(a + g(sinθ + μcosθ))
T = 200(1 + 9.8(sin25 + 0.05cos25))
T = 1,117.14995
Which is closest to answer A.
Understand that answer precision to 3 or 4 significant digits as exampled by our solution options CANNOT be justified by input numbers with only a single significant digit as in this question.
In fact, we cannot get the 1136 N result unless we also use gravity to a single significant digit of 10 m/s²
