1a.
1b. A disk with a rotational inertia of 1.20 kg·m2 rotates like a merry-go-round while undergoing a torque given by τ = (4.01 + 2.79t) N · m. At time t = 1.00 s, its angular momentum is 3.53 kg·m2/s. What is its angular momentum at t = 3.00 s?
1a. 1b. A disk with a rotational inertia of 1.20 kg·m2 rotates like a merry-go-round while...
A disk with a rotational inertia of 1.92 kg·m2 rotates like a merry-go-round while undergoing a torque given by τ = (1.47 + 6.39t) N · m. At time t = 1.00 s, its angular momentum is 2.57 kg·m2/s. What is its angular momentum at t = 3.00 s?
Question 13 A disk with a rotational inertia of 3.77 kg.m2 rotates like a merry-go-round while undergoing a torque given by T = (7.29 + 9.27t) N.m. At time t - 1.00 s, its angular momentum is 5.70 kg.ml/s. What is its angular momentum at t = 3.00 s? Number Units
Physics Q. A merry-go-round comprises a wooded disk of radius R=2 meters and rotational inertia 148kg·m2 . It rotates with an angular velocity of 2.5rad/s, with a small (point-like!) child of mass 10kg at its center. The child then crawls to the outside rim. What is the the angular velocity now?____rad/s please explain how to solve for this.
1a. 1b. 1c. 1d.
In the figure, a small block of mass m is released from rest and slides down a frictionless surface through heighth and then sticks to a uniform vertical rod of mass M and length d. The rod pivots about point o through angle before momentarily stopping. Find e in terms of the variables given and g. Ar In the figure, a small 0.372 kg block slides down a frictionless surface through height h = 0.918 m...
[33] A Merry-Go-Round (thin solid disk of mass M-2000 kg and rotational inertia ofla k-1 MR2)is rotating freely, without friction, at 46 rpm. Three people step on the very edge of the Merry-Go-Round (Gi.e. at a distance R from the center), each with a mass of m 80.0 kg (treat them as point particles). Determine the new angular speed of the Merry-Go-Round in rad/s. b. a. How many revolutions does it turn in 2.0 min, after the people get on?...
A playground merry-go-round has a radius of R = 4.0m and has a moment of inertia I_cm = 7.0 times 10^3 kg middot m^2 about an axis passing through the center of mass. There is negligible friction about its vertical axis. Two children each of mass m = 25kg are standing on opposite sides a distance r_0 = 3.0m from the central axis. The merry-go-round is initially at rest. A person on the ground applies a constant tangential force of...
A pulley, with a rotational inertia of 9.4 × 10-3 kg·m2 about its axle and a radius of 6.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F = 0.70t + 0.30t2, with F in newtons and t in seconds. The pulley is initially at rest. At t = 3.3 s what are (a) its angular acceleration and (b) its angular speed?
A pulley, with a rotational inertia of 7.6 × 10-3
kg·m2 about its axle and a radius of 9.3 cm, is acted on
by a force applied tangentially at its rim. The force magnitude
varies in time as F= 0.60t +
0.30t2, with F in newtons and
t in seconds. The pulley is initially at rest. At
t = 1.0 s what are (a) its angular
acceleration and (b) its angular speed?
Question 3 A pulley, with a rotational inertia...
1.A playground merry-go-round has a radius of 3.0 m and a
rotational inertia of 600 kgˑm2. It is initially
spinning at 0.80 rad/s when a 20 kg child crawls from the center to
the rim. When the child reaches the rim the angular velocity of the
merry-go-round in rad/s is:
2.A picture P of weight W = 40 N is hung by two strings as
shown. The magnitude of the tension force
of each string is T and θ=30°. The...
A person of mass 80 kg stands at the center of a rotating merry-go-round platform of radius 3.5 m and moment of inertia 950 kg*m^2 . The platform rotates without friction with angular velocity 0.85 rad/s . The person walks radially to the edge of the platform. 1.Calculate the angular velocity when the person reaches the edge. w=______________ rad/s 2.Calculate the rotational kinetic energy of the system of platform plus person before the person's walk. Ki=____________ J 3.Calculate the rotational...