Answer:
Mass of the second block is 1.4 kg
Explanation:
When a weight (mg) is displaced from its equilibrium position in a spring mass system, a restoring force (kx) will act on the weight.
so, mg = -kx
where, k is a constant
Mass of block () = 0.70 kg
For one spring mass system,
For the two spring mass system,
divide equation 2 by 1
on further rearranging,
So, mass of the second block is 1.4 kg.
Answer:
The measurement of first cylinder is more accurate.(A)
Explanation:
The least possible error higher will be accuracy.
The answer is C. gravity.
Answer: 110km/h
100+10=110km/h
Explanation:
Motion is defined as a change of position. The frame of reference is usually assumed to be at rest. If one is sitting on a bus, the road appears to be moving backwards relative to the observer. If he/she now walks to the front of the bus, he has a speed relative to the earth which is now greater than that of the bus hence the answer.
Answer:
Only a decreasing gravitational force that acts downward
Explanation:
The gravitational force is the gravitational pull which attract a mass of smaller size by the mass of a bigger size. It is the force which attract two masses close to each other.
In the context, when a ball is tossed up from the surface of an asteroid that have no atmosphere, the ball rises up and then falls back to the surface of the asteroid. The ball falls back because the gravitational pull of the asteroid pulls back the ball to its surface. Thus a decreasing gravitational force acts on the ball in the downward direction while the ball is in its way up.