A block is on a frictionless table, on earth. The block accelerates at 3.0 m/ $s ^ { 2 }$ when a $20 \mathrm {~N}$ horizontal force is applied to it. The block and table are set up on the Moon where the acceleration due to gravity is 1.62 m/ $s ^ { 2 }$ . The weight of the block on the Moon is closest to
A) 11 N.
B) 9.5 N.
C) 8.1 N.
D) 6.8 N.
E) 5.5 N.

Question

Quizplus · Accepted Answer

The mass of the block is $ \frac{20 \, \text{N}}{3.0 \, \text{m/s}^2} = 6.67 \, \text{kg} $. On the Moon, the weight is $ 6.67 \, \text{kg} \times 1.62 \, \text{m/s}^2 = 10.8 \, \text{N} $, which is closest to 11 N.

A Block Is on a Frictionless Table, on Earth s2s ^ { 2 }s2

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