A block slides along a frictionless surface and onto a slab with a rough surface. The slab has mass of 4 kg and the block has ma
1 answer:
Answer: the friction force on the small block at t equals 1 second is 2N
Explanation:
Given the data in the question;
from the slope in the graph provided, we will get the acceleration of the slab
At t = 1 seconds
Slope = acceleration = ( 1 - 0) / ( 2 - 0 ) = 1/2 = 0.5 m/s²
Force = ma = 4 × 0.5 = 2 N
so by Newton's third law
Force on block will be same which is 2N
Therefore the friction force on the small block at t equals 1 second is 2N
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(b) The direction is 76 degree from positive X axis in counter clockwise direction.
Explanation:
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speed of boat with respect to water, v(B,R) = 7.1 m/s at 26 degree west of north
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(b) The direction is given by