- An 80 gm object is connected to a 2 m string and starts
swinging from Point A through point B. (a) what is the maximum
speed of the object. (b) What is the change in gravitational
potential energy?
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An 80 gm object is connected to a 2 m string and starts
swinging from Point...
A man with a mass 80 kg tries to cross a river by swinging from a...
A man with a mass 80 kg tries to cross a river by swinging from a vine. The vine is 11.5 m long and his speed at the bottom is 8.25 m/s. What is the kinetic energy at the bottom of the swing? What is the tension at the bottom of the swing? If the total energy is equal to the KE at the bottom, what angle does the vine make with the vertical when the man first starts swinging...
A pendulum consists of a 1.4 kg stone swinging on a 4.3 m string of negligible...
A pendulum consists of a 1.4 kg stone swinging on a 4.3 m string of negligible mass. The stone has a speed of 8.1 m/s when it passes its lowest point. (a) What is the speed when the string is at 57 to the vertical? (b) What is the greatest angle with the vertical that the string will reach during the stone's motion? (c) If the potential energy of the pendulum-Earth system is taken to be zero at the stone's...
A pendulum consists of a 2.0 kg stone swinging on a 4.0 m string of negligible...
A pendulum consists of a 2.0 kg stone swinging on a 4.0 m string of negligible mass. The stone has a speed of 8 m/s when it passes its lowest point. (a) What is the speed when the string is at 60° to the vertical? (b) What is the greatest angle with the vertical that the string will reach during the stone's motion? (c) If the potential energy of the pendulum- Earth system is taken to be zero at the...
The figure below shows an object with a mass of m = 7.40 kg that starts...
The figure below shows an object with a mass of m = 7.40 kg that starts from rest at point A and slides on a track with negligible friction. Point A is at a height of 5.90 m, point B is at a height of 3.2 m, and point C is at a height of 2.0 m. (a) What is the object's speed at 3.2 m (in m/s)? What is the object's speed at 2.0 m (in m/s)? (b) What...
An EV starts at rest at position A and ends its travel at position C as shown in the following figure. The EV starts at zero speed at A and accelerates uniformly over time and reaches to 80 mile/hour...
An EV starts at rest at position A and ends its travel at position C as shown in the following figure. The EV starts at zero speed at A and accelerates uniformly over time and reaches to 80 mile/hour at point B From point B to C it starts with 80 mile/hour and accelerates uniformly over time during this period and reaches 100 mile/hour at point C. The vehicle has the following parameter values: m-700 kg, CD-0.2, AF 2.1 m2,...
a block with a mass of 2.5 kg starts from rest at the top of the...
a block with a mass of 2.5 kg starts from rest at the top of the
apparatus shown below. it then slides without friction down the
incline, and collides with a spring attached to a wall. The spring
has a spring constant of K=120N/m. Using the principle of energy
conservation,
a. find the initial gravitational potential energy of the block
at point A
b. find the kinetic energy of the block at point B
c. what is the velocity of...
2. (1 point) At t0, an object starts accelerating from rest at 4.5 m/s2 to the...
2. (1 point) At t0, an object starts accelerating from rest at 4.5 m/s2 to the right average speed during the interval from t 0 to t- (a) 6.0 s (b) 12.0 s (c) 121.5 s t2 is 27 m/s. Find t2. (d) 162.0 s
An object that falls from the roof of a building starts with potential energy that becomes...
An object that falls from the roof of a building starts with potential energy that becomes kinetic energy as the object falls. When the object strikes the ground, some of the kinetic energy is dissipated into the atomic-level motion of the particles that make up the object, and its temperature increases. If a 1.10 kg piece of iron fell from the roof of a building that was 24.0 m tall, what is the maximum temperature change (in °C) that it...
3. A box (mass = 100 g) is initially connected to a compressed (r = 80...
3. A box (mass = 100 g) is initially connected to a compressed (r = 80 cm) spring (k = 100 N/m) at point A. It was released and started moving along the horizontal surface (Plze = 0.2) until it moves up along the inclined surface (Ilk = 0.3). The box then stops at point D alone the incline. Consider that e = 30 m and 0 = 30°. (a) What is the velocity of the box at point B?)...
A child is swinging a 380-g ball at the end of a 69.0-cm-long string in a...
A child is swinging a 380-g ball at the end of a 69.0-cm-long string in a vertical circle. The string can withstand a tension of 16.0 N before breaking. (a) What is the tension in the string when the ball is at the top of the circle if its speed at that point is 3.90 m/s? (b) What is the maximum speed the ball can have at the bottom of the circle if the string does not break?
A pendulum consists of a 1.4 kg stone swinging on a 4.3 m string of negligible mass. The stone has a speed of 8.1 m/s when it passes its lowest point. (a) What is the speed when the string is at 57 to the vertical? (b) What is the greatest angle with the vertical that the string will reach during the stone's motion? (c) If the potential energy of the pendulum-Earth system is taken to be zero at the stone's...
An EV starts at rest at position A and ends its travel at position C as shown in the following figure. The EV starts at zero speed at A and accelerates uniformly over time and reaches to 80 mile/hour at point B From point B to C it starts with 80 mile/hour and accelerates uniformly over time during this period and reaches 100 mile/hour at point C. The vehicle has the following parameter values: m-700 kg, CD-0.2, AF 2.1 m2,...
a block with a mass of 2.5 kg starts from rest at the top of the
apparatus shown below. it then slides without friction down the
incline, and collides with a spring attached to a wall. The spring
has a spring constant of K=120N/m. Using the principle of energy
conservation,
a. find the initial gravitational potential energy of the block
at point A
b. find the kinetic energy of the block at point B
c. what is the velocity of...
2. (1 point) At t0, an object starts accelerating from rest at 4.5 m/s2 to the right average speed during the interval from t 0 to t- (a) 6.0 s (b) 12.0 s (c) 121.5 s t2 is 27 m/s. Find t2. (d) 162.0 s
3. A box (mass = 100 g) is initially connected to a compressed (r = 80 cm) spring (k = 100 N/m) at point A. It was released and started moving along the horizontal surface (Plze = 0.2) until it moves up along the inclined surface (Ilk = 0.3). The box then stops at point D alone the incline. Consider that e = 30 m and 0 = 30°. (a) What is the velocity of the box at point B?)...
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