Which of the following is a star that has begun to run out of fuel? A) Neutron star B) Red giant C) Stellar nebula D) White dwar
1 answer:
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Answer:
The torque about the origin is
Explanation:
Torque is the cross product between force
and vector position
respect a fixed point (in our case the origin):
There are multiple ways to calculate a cross product but we're going to use most common method, finding the determinant of the matrix:
Answer:
v = 3.08 m/s.
Explanation:
Given,
- Initial velocity of the block = u = 43 cm/s = 0.43 m/s
- mass of the block = m = 1.40 kg
- spring constant = k = 15.5 N/m.
- x = 0.650 m
At x = 0.650 m
Let 'a' be the acceleration of the block at x.
Total force due to the spring force on the blcok at x= kx
Hence the acceleration of the block at x is 7.19\ m/s^2.
Let 'v' be the velocity of the block at x.
From the kinematics,
Hence at the compression x = 0.650 m the velocity of the block is 3.08 m/s.