Which of the following statements are true?
(i) An object will continue moving uniformly until the resultant force on it is zero.
(ii) The bodies do not change their state of rest or motion unless acted upon by an unbalanced external force.
(iii) If a body is at rest on the surface of the Earth then the net downward force exerted by the Earth and net upward force exerted on the body are not equal to each other.
Important Questions on Force and Pressure
Match the column I with column II and select the correct option from the codes given below.
| Column I | Column II | ||
| (a) | A girl pulling the leash of a running dog | (i) | Impact of force can make stationary object to move |
| (b) | A driver turning the steering wheel of a car | (ii) | Gravity acts upon an object |
| (c) | When you hit a nail with a hammer | (iii) | Force can make an object go slower |
| (d) | A ball released from the top of a tower | (iv) | Force can change the direction of a moving object |
(i) The weight of the camel, that is the force, is spread over the large area of its feet.
(ii) The pressure exerted by the camel's body on the sand is very large.
There are three tins filled with water and have holes of the same size as shown in figure. Which of the following options correctly identifies true (T) and false (F) for the given statements?
(i) The farthest spout is from the middle hole in case (a).
(ii) The stream of water falls out the farthest through the upper hole in case (b).
(iii) The farthest spout is from the lowest hole in case (c).
The diagram shows an object hanging from a string. Which of the following is the correct statement about the diagram?
The diagram shows a simple mercury barometer. The mercury level is at a height when the atmospheric pressure is . What is the pressure at ?
In the given figure, a beaker is filled with water. and are three holes in beaker, which of the following statements is correct regarding this?
