Answer:
The maximum load that this person is able to lift is 34.3 N
Explanation:
Applying the balancing torque, the expression is equal:
F₁L₁ = F₂L₂
Where
g = 9.8 m/s² = gravity
L₁ = 0.8 m
F₂ = 527 N
L₂ = 6 - 0.8 = 5.2 m
Replacing and clearing the mass m:
The maximum load that this person is able to lift is:
F = m * g = 3.5 * 9.8 = 34.3 N
Answer:
(wait tell someone els answers please)
Im pretty sure its A
Answer:
Average velocity is 3.93 cm/s
Root mean square velocity is 4.79 cm/s
Velocity peak to peak is 6.28 cm/s
Explanation:
Speed of 2 particles = 5.3 cm/s
Speed of 4 particles = 1.4 cm/s
Speed of 6 particles = 7.14 cm/s
Speed of 8 particles = 1.52 cm/s
Speed of 2 particles = 7.68 cm/s
Average velocity is 3.93 cm/s
Root mean square velocity is 4.79 cm/s
Velocity peak to peak is 6.28 cm/s
The flea jumps at high velocity, reaches zero velocity at the maximum height 21.1 cm before starting to fall. Solve for initial velocity given final velocity is zero.
since time is not given, use the equation:
v^2 = u^2 + 2as
convert gravity or displacement to have same units. 9.8 m/s = 980 cm/s
0 = u^2 + 2(-980)(21.1)
41356 = u^2
sqrt(41356) = u
203.4 cm/s = u
Answer:
-4714.28N
Explanation:
Given
- Mass of person, m= 55 kg
- Car speed initially ,u =30
- Car speed finally, v=0(car comes to a halt)
- Duration for the car to come halt,t=0.35 sec
This question is based on the concept of Impulse
Impulse is the force acting in a time interval(usually very short)
it is equal to force multiplied with time and also equal to change in momentum of body
⇒
Therefore the seat belt exerts a force of -4718.28N on the person
The<u> negative sign</u> signifies that seat belt exerts force in opposite direction of Force