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Introduction to Radial & Tangential Acceleration

an ideal spri...

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an ideal spring is used to fire a 2 g block horizontally across a frictionless table top . the spring has spring cons†an 80 N/m and is initially compressed by 3 cm . the speed of the block as it leaves the spring is

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Q. Assertion :One end of an ideal mass less spring is connected to a fixed vertical wall and the other end has a block of mass m initially at rest on a smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on the block as shown. Then the maximum extension in spring is equal to the maximum compression in the spring. Reason: To compress and to expand an ideal unstretched spring by equal amount, same work is to be done on the spring.

Q. A small block of ice with mass

0.120

kg is placed against a horizontal compressed spring mounted on a horizontal table top that is

1.90

m above the floor. The spring has a force constant

k = 2300

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0.045

m. The mass of the spring is negligible. The spring is released, and the block slides along the table, goes off the edge, and travels to the floor. If there is negligible friction between the ice and the table, what is the speed of the block of ice when it reaches the floor.

(g = 9.8 m / s^{2})

2 kg

block slides on a horizontal floor with a speed of

4 m/s

. It strikes an uncompressed spring and compresses it till the block is motionless. The kinetic friction force is

15 N

and spring constant is

10, 000 N/m

. The spring compresses by

Q. A 2 kg block slides on a horizontal floor with a speed of 4 m/s. It strikes an uncompressed spring, and compresses it till the block is motionless. The kinetic friction force is 15 N and spring constant is 10,000 N/m. The spring compresses by :-

Q. A shown in figure there is a spring block system. Block of mass

500

g is pressed against a horizontal spring fixed at one end to compress the spring through

5.0

cm. The spring constant is

500

N/m. When released, the block moves horizontally till it leaves the spring. Calculate the distance where it will hit the ground

4

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