Force Test

Result

Force Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

A boy sitting on the top most berth in the compartment of a train, which is just going to stop at a railway station, drops an apple aiming at the open hand of his brother sitting vertically below him at a distance of about 2 m. The apple will fall

A
in the hand of his brother

B
slightly away from the hands of his brother in the direction of motion of the train

C
slightly away from the hands of his brother in the direction opposite to the direction of motion of the train

D
None of these

Solution

When the boy drops the apple, its initial velocity in the horizontal direction is the same as that of the train and there is no force acting in horizontal direction, so its velocity remains the same, whereas the train's motion is retarded. Hence, it will slow down so that the distance travelled by the train is less as compared to the apple in horizontal direction. So, the apple will fall away from the hands of his brother in the direction of motion of the train.
Question 2
1 / -0

Statement 1: While walking on the ice, person takes small steps instead of running to avoid slipping.
Statement 2: While walking on the ice in small steps, he increases the normal downward force, which increases the normal reaction, which in turn increases the friction.

A
Statement 1 is correct and statement 2 is correct explanation of 1.

B
Statement 1 is correct and statement 2 is not the correct explanation of 1.

C
Statement 1 is correct, statement 2 is incorrect.

D
Both statement 1 and statement 2 are incorrect.

Solution

As the person takes small steps while walking on ice, the normal reaction of the surface is more as he pushes the ice perpendicular to the surface of the ice. Hence, the friction increases and thetendency of slipping decreases.