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Madhura Mandal
Subject: Physics
, asked on 7/3/18
A ball is rolling on the ground with a velocity of 1 m/s. After travelling a distance of 5 m it comes to rest. What is the coefficient of friction?
Answer
1
Alok Singh
Subject: Physics
, asked on 6/3/18
23. Two bodies of masses 3 Kg and 5 Kg are connected by a sting which over a frictionless pulley at the frictionless inclined plane of slope 1 and 3, the first body hanging vertically and the second body resting on the plane. The system is released from rest. Find the velocity when the first body has descended 6 m. If g = 10 m/s
2
.
Answer
1
Ekta Ray
Subject: Physics
, asked on 3/3/18
Please solve this
Example 6.
A block A of mass 4 kg is placed on another block B of mass 5 kg, and the block B rests on a smooth horizontal table. For sliding block A on B, a horizontal force of 12 N is required to be applied on A. How much maximum force can be applied on B so that both A and B move together ? Also, find out acceleration produced by this force.
(Central Schools 2014)
Answer
1
Rijo
Subject: Physics
, asked on 3/3/18
Show that the law of conservation of linear momentum and newton’s third law are the
same
Answer
1
Ruba Balu
Subject: Physics
, asked on 3/3/18
Why does a heavy gun not recoil as strong as a light gun?
Answer
1
Maitri C Trivedi
Subject: Physics
, asked on 2/3/18
two monkeys of mass 10 kg and 8 kg are moving along a vertical rope as shown in the figure. the former climbing up with accelareation 2 m/s^2 while the latter coming down with a uniform velocity of 2 m/s^2. tension on the rope at the fixed support is
Answer
1
Maitri C Trivedi
Subject: Physics
, asked on 2/3/18
a block of mass 5 kg is moving on a horizontal surface with velocity 1.5 m/s. a force of 5 N now acts on the block for 4 s and perpendicular to the velocity . the displacement of the block from the point where the force started acting is
Answer
2
Aunimesh
Subject: Physics
, asked on 1/3/18
Q. A bomb is thrown in a horizontal direction with a velocity of 50 m/s. It explodes into 2 parts of masses 6 kg and 3 kg. Two heavier fragment continues to move in horizontal direction with a velocity of 80 m/s. Calculate the velocity of lighter fragment.
Answer
1
Ian Colaco
Subject: Physics
, asked on 27/2/18
Prove that the apparent weight of a person increases or decreases in a life. (accelerated)
Answer
1
Ian Colaco
Subject: Physics
, asked on 27/2/18
Calculate the force required to move a train of 2000 quintal up an inclined of 1 in 50 with an acceleration of 2ms^-2, the force of friction being 0.5 Newton per quintal.
Answer
1
Ian Colaco
Subject: Physics
, asked on 27/2/18
State Newton's second law of motion. With the help of this law, establish a relation between the force applied and acceleration produced in a body.
Answer
1
Vedant
Subject: Physics
, asked on 27/2/18
Answer
Q). A man pulls a loaded trolley of mass 70 kg along a horizontal surface at constant velocity as shown in figure. The coefficient of kinetic friction
μ
k
between the tyres of the trolley and the road is 0.1 and the angle made by the rope with the horizontal is 40
°
. Calculate the tension in the rope.
Answer
1
Ian Colaco
Subject: Physics
, asked on 24/2/18
a rubber ball of mass 25 g falls from a height of 2m and rebounds to a height of 1.5m. Find the impulse and the average force between the ball and the ground if the time during which they are in contact was 0.1s
Answer
1
Krithikha B
Subject: Physics
, asked on 22/2/18
the force acting on a body of mass 10 kg is 2i+j-k N . if the bosy os at rest initially find velocity after 20sec
Answer
2
Bhavika
Subject: Physics
, asked on 20/2/18
A bullet of mass 0.012 kg and horizontal speed 70 m strikes a block of wood of mass 0.4 kg and instantly comes to rest with respect to the block. The block is suspended from the ceiling by means of thin wires. Calculate the height to which the block rises. Also, estimate the amount of heat produced to the block.
Answer
1
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Example 6. A block A of mass 4 kg is placed on another block B of mass 5 kg, and the block B rests on a smooth horizontal table. For sliding block A on B, a horizontal force of 12 N is required to be applied on A. How much maximum force can be applied on B so that both A and B move together ? Also, find out acceleration produced by this force. (Central Schools 2014)
same
Q. A bomb is thrown in a horizontal direction with a velocity of 50 m/s. It explodes into 2 parts of masses 6 kg and 3 kg. Two heavier fragment continues to move in horizontal direction with a velocity of 80 m/s. Calculate the velocity of lighter fragment.
Q). A man pulls a loaded trolley of mass 70 kg along a horizontal surface at constant velocity as shown in figure. The coefficient of kinetic friction between the tyres of the trolley and the road is 0.1 and the angle made by the rope with the horizontal is 40. Calculate the tension in the rope.