CBSE Class 12-science Answered
Hello
Asked by jain.pradeep | 27 Apr, 2019, 10:51: AM
Expert Answer
qn.18 :- net force = mass × acceleration. but acceleration ( g sinθ ) along the direction is constant throughout the motion.
Hence graph-E represents the net force.
qn.19 :- speed of the block = u - gsinθ t , which is linearly decreasing during upward motion and linearly increasing during downward motion
Hence graph-A represents the speed of block
qn. 20 :- potential energy is proportional to vertical distance h. Vertical distance h is given by, h = u sinθ t - (1/2) g sinθ t2
Hence potential energy is a quadratic function and initially increasing while going up then decreasing while coming down.
Graph-D represents the potential energy.
qn. 21 :- since total mechanical energy is constant throughout the motion, graph-E represents the total mechanical energy
Answered by Thiyagarajan K | 27 Apr, 2019, 04:58: PM
Concept Videos
CBSE 12-science - Physics
Asked by aishaisha091098 | 19 Apr, 2024, 04:54: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by dasrituparna1999 | 13 Apr, 2024, 06:56: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by dasrituparna1999 | 12 Apr, 2024, 09:26: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mishrigupta19319 | 08 Apr, 2024, 06:28: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by madhav9119887644 | 07 Apr, 2024, 08:10: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by mishrigupta19319 | 07 Apr, 2024, 11:23: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by adityagalar2007 | 06 Apr, 2024, 01:06: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by amlanmcob | 06 Apr, 2024, 12:27: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by hussain221man | 05 Apr, 2024, 08:44: PM
ANSWERED BY EXPERT