1. what is relation between weight and accerlation due to gravity.
2. Find the weight of 80 kg man on the surface of the moon. What should be his mass on the earth and on moon.(ge =9.8 m-s2 gm=1.63 m-s2)
3. What is the distance covered by a freely falling body o during the first three seconds of its motion when g is 10 m-s2
4. convert a force of 5 kg weight into S.I unit of force (kg weight =9.8 N)
please answer this questions I will mark as brainlist
Answers
Answer:
1) On the surface of the earth, its value is 9.8 meters per square second or 32.2 feet per square second. g = G * m earth / (d earth)^2. The weight W, or gravitational force, is then just the mass of an object times the gravitational acceleration. W = m * g.
2) We would take the mass given, 80 kg, and multiply it times the acceleration of Earth's downward pull on that mass, 9.8 m/s/s. So the weight on Earth is 784 newtons. So the weight of the same 80 kg mass on the moon is 133.28 N.
3)
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Correct option is
A
forms an arithmetic progression
x
1
=0+
2
1
(g)(1)
2
=5m
x
1
+x
2
=0+
2
1
(g)(2)
2
=20m⟹x
2
15m
x
1
+x
2
+x
3
=0+
2
1
(g)(3)
2
=45m⟹x
3
=25m
x
1
+x
2
+……x
n
=0+
2
1
(g)(n)
2
=5n
2
m⟹x
n
=5n
2
−[5(n−1)
2
]=10n−5=5+10(n−1)
⟹x
1
,x
2
,……x
n
forming an AP with d=10.
4) Hence the force is 50 N