A block of wood is kept in two different ways on a table as shown below, which exerts a force of 50 N on the table. Find the minimum pressure exerted by the block on the table.
with diemensions 40 x 20 x 10
Answers
Answered by
2
Answer:
Correct option is
B
(a) P=2450Nm
−2
(b) P=612.5Nm
−2
Mass of the wooden block, m=5kg
Thrust due to wooden block,
Mg=5kg×9.8ms
−2
=49N
(a) Surface area of 20cm×10cm surface,
A=(20×10)cm
2
=(0.2×0.1)m
2
=0.02m
2
P=
A
mg
P=
0.02m
2
49N
=
0.02
49
Nm
−2
or Pressure, P=2450Nm
−2
.
(b) Surface area of 40cm×20cm surface,
A=(40×20)cm
2
=(0.4×0.2)m
2
=0.08m
2
P=
0.08m
2
49N
=
0.08
49
Nm
−2
or Pressure, P=612.5Nm
−2
.
Explanation:
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