ICSE Class 10 Answered
when a person is walking on a leveled road which forces applies on him.
1) WHICH FORCE IS NEGATIVE
2)WHICH FORCE IS ZERO
Asked by dadhich_pawan | 18 Feb, 2020, 04:57: PM
Expert Answer
Different forces acting on a walking man
(i) Gravitational Force W due to man's weight
(ii) Normal force N exerted by ground
(iii) friction force f acting between ground and feet ( or shoe )
(iv) Internal forces IF of body to move legs
(v) air drag force ( negligible )
All the forces except air drag force are required for walking . None of them can be zero.
regarding direction we can assume downward force and force acting in towards left
when man is walking towards right are negative
( for internal forces IF though arrow is shown downward, it may act upward also to move up legs )
Answered by Thiyagarajan K | 19 Feb, 2020, 12:27: PM
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