AIPMT PRELIMS 2010 Physics Friction MCQ Question
A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is μ. The acceleration α of the cart that will prevent the block from falling satisfies
α < g/μ
α > mg/μ
α > g/μm
α ≥ g/μ
Correct Answer
Detailed Explanation
To prevent the block from falling, the frictional force must be equal to or greater than the gravitational force. Thus, μmα ≥ mg, leading to α ≥ g/μ.
Found an issue with this question?
Related Questions
More from 2010
Consider the following four statements (a–d) regarding kidney transplant and select the two correct ones out of these. a. Even if a kidney transplant...
Which one of the following statements is correct with respect to AIDS?
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of water in the capillary tube is 5 g. Another capilla...