Miscellaneous Test

Result

Miscellaneous Test - 67

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Weekly Quiz Competition

Question 1
4 / -1

A train whose mass is 16 metric tons, moves at the rate of 72 km/hr. After applying breaks it stops in 500 meter. What is the force exerted by breaks obtaining it to be uniform?

A
800N

B
1600 N

C
3200N

D
6400 N

Solution
Question 2
4 / -1

A man weighing 60 kg jumps off a railway train running on horizontal rails at 20 km/h with a packet weighing 10 kg in his hand. The thrust of the packet on his hand is

A
0

B
10 kg wt

C
50 kg wt

D
70 kg wt
Question 3
4 / -1

A bullet of mass 10 gram fired into a wall with a velocity of 10 m/sec loses its velocity in penetrating through 5 cm into the wall. The average force exerted by the wall is

A
10⁴ gm wt

B
10⁶ dynes

C
10⁵ dynes

D
None of these

Solution
Question 4
4 / -1

A train is moving with constant velocity. If the resistance of its motion is 10 lbs per ton (of mass) and the force exerted by the engine is 200 lbs wt, then the mass of engine is

A
20 tons

B
200 tons

C
2000 ton

D
2 tons

Solution
Question 5
4 / -1

If the barrel of the gun is cut down 50 cm, then a bullet of 49 kilogram fire out with velocity 361 m/sec instead of 441 m/sec. The approximate thrust of gas on the bullet will be

A
317.6 metric ton weight

B
318.4 metric ton weight

C
319.3 metric ton weight

D
320.8 metric ton weight

Solution
Question 6
4 / -1

A cart of 100 kg is free to move on smooth rails and a block of 20 kg is resting on it. Surface of contact between the cart and the block is smooth. A force of 60 Newton is applied to the cart. Acceleration of 20 kg, block in metres per second² is

A
3

B
0.6

C
0.5

D
0

Solution
Question 7
4 / -1

A man having mass 70 kilogram is standing in a lift which is moving with uniform acceleration of 25 cm/sec². What will be the reaction of floor when lift coming down

A

B

C

D
Question 8
4 / -1

From the gun cartage of mass M, a fire arm of mass rn with velocityu relative to gun cartage is fired. The real velocities of fire arms and gun cartage will be respectively

A

B

C

D

Solution
Question 9
4 / -1

A glass marble, whose mass is (1/10) kg falls from a height of 2.5 m and rebounds to a height of 1.6 m. Then the average force between the marble and the floor, if the time during which they are in contact be one-tenth of a second, is

A
10.58 N

B
11.58 N

C
12.58 N

D
13.58 N

Solution
Question 10
4 / -1

A rough plane is 100 ft long and is inclined to the horizon at an angle sin’(3/5), the coefficient of friction being 1/2, and a body slides down it from rest at the highest point, the velocity on reaching the bottom would be

A

B

C

D

Solution