Answer:
Rotational inertia of the object is given as
Explanation:
As we know that the acceleration of the object on inclined plane is given as
now we know that velocity at any instant of time is given as
now we know that if the graph between velocity and time is given then the slope of the graph will be same as acceleration
so here we have
now from the graph slope of the graph is given as
now rotational inertia is given as
Answer:
the force exerted by the triceps muscle is 1190.4 N or 1.2 kN
Explanation:
given data
F = 96 N
D = 2.50 cm
L = 31 cm
solution
we will apply here equilibrium condition that is
∑r = about the elbow joint ............................1
so force exert by the muscle is
F(tri) × D = F × L .................2
put here value
F(tri) × 2.50 = 96 × 31
solve it we get
F(tri) = 1190.4 N
so the force exerted by the triceps muscle is 1190.4 N or 1.2 kN
Answer:
0.45 m/s in the negative x-direction
Explanation:
From the law of conservation of momentum, the sum of initial momentum equals the sum of final momentum
Momentum, p=mv where m is the mass and v is the velocity
where is the common velocity, and are velocities of magnet moving in positive x-direction and magnet moving in negative x-direction respectively, and are masses of magnet moving in positive x-direction and magnet moving in negative x-direction respectively.
Substituting 125 g for and 85 g for , 7.33 m/s , -11.9 m/s for then
Therefore, the velocity of single unit is 0.45 m/s in the negative x-direction