A body of mass 5 kg is pushed up to 2
m on a smooth 300 inclined surface by a force of 60 N acting parallel to the
plane. The work done on the body is :
5 किलोग्राम द्रव्यमान के एक पिंड को समतल के समानांतर 60 N के बल द्वारा 300 झुकाव वाली चिकनी सतह पर 2 मीटर तक धकेला जाता है। शरीर पर किया गया कार्य है:
Zero
70.95 J
141.9 J
35.47 J
70.95 J
Now, net effective force is given by,
F net = 60 - 5g sin 30 = 35.475N
Work done on the body is given by,
F net x d = 35.475 x 2 = 70.95J
Hence. the correct option is (B)
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