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If a particle moves in a circular path with constant speed, what can be said about its acceleration?
In uniform circular motion, the acceleration (centripetal acceleration) always points towards the center of the circle, perpendicular to the velocity vector. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer accordiRead more
In uniform circular motion, the acceleration (centripetal acceleration) always points towards the center of the circle, perpendicular to the velocity vector. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer according to your understanding.
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The radius of gyration 𝑘 is related to the moment of inertia 𝐼 by which of the following formulas?
The radius of gyration 𝑘 is defined such that 𝐼 = 𝑀𝑘², where 𝑀 is the total mass of the object. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer according to your understanding. For more please visit here: https://Read more
The radius of gyration 𝑘 is defined such that 𝐼 = 𝑀𝑘², where 𝑀 is the total mass of the object. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer according to your understanding.
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If the net torque acting on a system is zero, what can we infer about the system’s angular momentum?
When net torque is zero, there is no change in angular momentum. According to the principle of conservation of angular momentum, 𝐿 = constant. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer according to your undeRead more
When net torque is zero, there is no change in angular momentum. According to the principle of conservation of angular momentum, 𝐿 = constant. This question related to Chapter 6 physics Class 11th NCERT. From the Chapter 6 System of Particles and Rotational Motion. Give answer according to your understanding.
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Write three distinct advantages of a reflecting type telescope over a refracting type telescope.
(i) No Chromatic Aberration: Reflecting telescopes avoid color distortions (chromatic aberration) since mirrors do not refract light. (ii) Larger Apertures: Mirrors can be made much larger than lenses, allowing for more light gathering. (iii) No Lens Sagging: Mirrors support their own weight, unlikeRead more
(i) No Chromatic Aberration: Reflecting telescopes avoid color distortions (chromatic aberration) since mirrors do not refract light.
(ii) Larger Apertures: Mirrors can be made much larger than lenses, allowing for more light gathering.
(iii) No Lens Sagging: Mirrors support their own weight, unlike lenses, which can sag and distort the image due to gravity.
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The decrease in the potential energy of a ball of mass 20 kg, which falls from a height 50 cm is
To determine the potential energy loss of a 20 kg ball dropped from 50 cm height, we shall use the potential energy formula: Potential Energy = mass × gravitational acceleration × height Mass (m) = 20 kg Height (h) = 50 cm = 0.5 m Gravitational acceleration (g) ≈ 9.8 m/s² Putting all these values inRead more
To determine the potential energy loss of a 20 kg ball dropped from 50 cm height, we shall use the potential energy formula:
Potential Energy = mass × gravitational acceleration × height
Mass (m) = 20 kg
Height (h) = 50 cm = 0.5 m
Gravitational acceleration (g) ≈ 9.8 m/s²
Putting all these values into the formula,
Potential Energy = 20 kg × 9.8 m/s² × 0.5 m
Potential Energy = 20 kg × 4.9 m²/s²
Potential Energy = 98 J
This implies that the potential energy of the ball has decreased by 98 J.
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