Two identicle blocks A and B are placed on two inclined planes as shown in diagram. Neglect air resistance and friction Read the following statement and choose the correct options Statement-1: Kinetic energy of 'A' on sliding to J will be greater than the kinetic energy of B on falling vertically to M.
Statement-2: Acceleration of 'A' will be greater then acceleration of 'B' when both are released to slide on inclined planes.
Statement-3: Work done by external agent to move block slowly from position B to O is negative

Options

A. Statement 1 is true
B. Statement 2 is true
C. Statement 3 is true
D. No statement is true

Answer

B, C

Explanation

Statement-1: `w_(net)=Delta KE_(f)`
:. Work done by gravity is same in both case
Statement-2: `tantheta_(A)=h/l, tantheta_(B)=h/(2l)`
`theta(A) gt theta_(B)`
`A=gsintheta`
Statement-3: `w_(g)+w_(ext)=0`
`w_(ext)=-w_(g)`